How severe is CVE-2023-2861?

CVE-2023-2861 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2023-2861 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2861?

CVE-2023-2861 affects Qemu. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-2861?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-2861 published?

CVE-2023-2861 was published on 2023-12-06 and last updated on 2026-06-17.

CVE-2023-2861

CVE-2023-2861 is a medium-severity vulnerability in Qemu with a CVSS 3.x base score of 6.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: Medium (CVSS 3.x base score 6.0)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Qemu
Published: 2023-12-06
Last modified: 2026-06-17

Description

A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder.

Frequently asked questions

What is CVE-2023-2861?: A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder.
How severe is CVE-2023-2861?: CVE-2023-2861 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-2861 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2861?: CVE-2023-2861 affects Qemu. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-2861?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-2861 published?: CVE-2023-2861 was published on 2023-12-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

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